% !TeX program = xelatex
% !TeX encoding = UTF-8
\documentclass[UTF8]{standalone}
\usepackage{amsmath,fourier,ctex,tikz}
\begin{document}
\begin{tikzpicture}
	\draw[-latex] (-2.8,0) -- (2.5,0) node[below] {$x$};
	\draw[-latex] (0,-2) -- (0,2.8) node[right] {$f'(x)$};
	\node[left=5pt,below=-2pt] at (0,0) {$O$};
	\draw (0,2) circle (0.1);
	\draw (0,-1.5) circle (0.1);
	\draw (0.07,2.06) to[out=40,in=95] (2,-0.5);
	\draw (-0.07,-1.435) to[out=110,in=0] (-1.5,0);
	\draw (-1.5,0) to[out=180,in=80] (-2.8,-1.3);
\end{tikzpicture}
\end{document}